Cross-Site Scripting (XSS) Vulnerabilities in Flogr

[advisory@xxxxxxxxxxxx]

Advisory ID: HTB23110
Product: Flogr
Vendor: Flogr
Vulnerable Version(s): 2.5.6 and probably prior
Tested Version: 2.5.6
Vendor Notification: August 15, 2012 
Public Disclosure: September 5, 2012 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2012-4336
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Risk Level: Medium 
Discovered and Provided: High-Tech Bridge Security Research Lab ( 
https://www.htbridge.com/advisory/ ) 

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Advisory Details:

High-Tech Bridge Security Research Lab discovered multiple vulnerabilities in 
Flogr, which can be exploited to perform Cross-Site Scripting (XSS) attacks.


1) Cross-Site Scripting (XSS) Vulnerabilities  in Flogr: CVE-2012-4336

1.1 Input appended to the URL after /index.php is not properly sanitised before 
being returned to the user. 
This can be exploited to execute arbitrary HTML and script code in a user's 
browser session in context of an affected website.

The following PoC demonstrates the vulnerability:

http://[host]/index.php/%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E/

Successful exploitation of this vulnerability requires that Apache's directive 
"AcceptPathInfo" is set to "on" or "default" (default value is "default") 

1.2 Input passed via arbitrary GET parameter to /index.php is not properly 
sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in user's 
browser session in context of an affected website.

The following PoC demonstrates the vulnerability:

http://[host]/index.php?[any]=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E



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References:

[1] High-Tech Bridge Advisory HTB23110 - 
https://www.htbridge.com/advisory/HTB23110 - Cross-Site Scripting (XSS) 
Vulnerabilities  in Flogr.
[2] Flogr - http://code.google.com/p/flogr/ - Flogr is a flexible script that 
displays your flickr photos in a customizable photo gallery you host on your 
website.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - 
international in scope and free for public use, CVE® is a dictionary of 
publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to 
developers and security practitioners, CWE is a formal list of software 
weakness types. 

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Disclaimer: The information provided in this Advisory is provided "as is" and 
without any warranty of any kind. Details of this Advisory may be updated in 
order to provide as accurate information as possible. The latest version of the 
Advisory is available on web page [1] in the References.